Furthermore to the objective measurements the users will be asked questions about their feelings and opinions about the game. Especially the physiotherapists will be asked if they see a positive therapeutic aspect and if they could imagine giving patients exergames as self-training exercises. This will be done with a questionnaire that includes open questions and five-point Likert scale questions. This is based on publications where it is considered important that the user has a positive attitude towards the product, to ensure regular and widespread use.